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Suborder:
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Goniatitina 
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Superfamily:
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Dimorphoceratoidea 
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Family:
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Dimorphoceratidae 
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Subfamily:
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Glyphiolobinae 
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Genus:
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Metadimorphoceras 
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Species:
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sp. | 
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Qualifier:
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in | 
| 
Author:
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	div. authors 	 
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| 
Lower Boundary:
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DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
 
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Upper Boundary:
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Pendleian--Arnsbergian        [PND--ARN], 324 million years
 
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